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US Patent: 2,142,923
Drill grinding machine
Patentee:
Roderick P. Stocking - Drexel Hill, PA

USPTO Classifications:
269/58, 269/71, 269/76, 451/272, 451/375

Tool Categories:
metalworking machines : grinders : drill grinders

Assignees:
William Sellers & Co., Inc. - Philadelphia, PA

Manufacturer:
William Sellers & Co., Inc. - Philadelphia, PA

Witnesses:
Unknown

Patent Dates:
Applied: Aug. 05, 1936
Granted: Jan. 03, 1939

Patent Pictures:
USPTO pdf tiff
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"Vintage Machinery" entry for William Sellers & Co.
Description:
Patent number seen on a Type 1-G drill grinder from William Sellers & Co.

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